<!DOCTYPE html>
<html>
<head>
<title>RTCPeerConnection data channel type collison</title>
<script src="../../resources/testharness.js"></script>
<script src="../../resources/testharnessreport.js"></script>
</head>
</body>
<script>

for (const constraint of [{},
                          // {mandatory: { RtpDataChannels: false }},
                          {mandatory: { RtpDataChannels: true }},
                          {optional: [{ RtpDataChannels: false }]},
                          {optional: [{ RtpDataChannels: true }]},
                         ]) {
  promise_test(async t => {
    var pc = new RTCPeerConnection({}, constraint);
    t.add_cleanup(() => pc.close());
    pc.createDataChannel('');
    offer = await pc.createOffer();
    assert_regexp_match(offer.sdp, /m=application .* webrtc-datachannel/);
    assert_equals(offer.sdp.match(/a=rtpmap:\d+ google-data/), null);
  }, 'Asking for Data Channels with constraint ' + JSON.stringify(constraint) + ' generates SCTP DC offer');
}
</script>
</body>
</html>
